102021210101 has 16 divisors (see below), whose sum is σ = 112873181184. Its totient is φ = 91719623424.

The previous prime is 102021210013. The next prime is 102021210119. The reversal of 102021210101 is 101012120201.

It is a cyclic number.

It is not a de Polignac number, because 102021210101 - 2¹⁰ = 102021209077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021213101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108620 + ... + 464586.

It is an arithmetic number, because the mean of its divisors is an integer number (7054573824).

Almost surely, 2^102021210101 is an apocalyptic number.

It is an amenable number.

102021210101 is a deficient number, since it is larger than the sum of its proper divisors (10851971083).

102021210101 is a wasteful number, since it uses less digits than its factorization.

102021210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356740.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102021210101 its reverse (101012120201), we get a palindrome (203033330302).

The spelling of 102021210101 in words is "one hundred two billion, twenty-one million, two hundred ten thousand, one hundred one".